It really depends what you're doing, and how important the colour-accuracy is.
If it's just "so they look the same", you can probably do it by eye. Bring up a photo on both montiors (Macie the KODAK Digital LAD Test Image is good for this), then fiddle with the settings until they look the same. Typically you reset everything on both monitors (which can often get you most of the way there), then adjust the contrast, then brightness then colour-balance till the two match.
I also found "Monitor Color Calibration for free using your DSLR", which describes using a DSLR to calibrate a monitor. It's not exactly a one-click-and-everything-is-perfect setup, but it seems to work..
The Datacolor Spyder series seem to be about the most popular monitor calibration probe, and are quite reasonably priced (about $150USD according to froogle.com)
At the last place I worked, they used (well, originally developed!) cineSpace for monitor-profiling/calibration - although it's not exactly cheap, from here, "Pricing for cineSpace starts at 1,000.00 USD for a basic cineSpace license package". cineSpace is likely overkill for what you are doing, although you do mention your machine having a nVidia Quadro card which implies some form of high-end visual "stuff"..
In short, try doing it by eye (or using a DSLR). If that doesn't work, look into the Spyder 3.